COOLTHERM 6250
Harmonization Code : 3910.00.00.90 | Silicones in Primary Forms; Others
Main features
- 350 cP Low-Viscosity Curing Agent
- High-Solids Adhesive/Encapsulation Curing Agent
- Chemical-Resistant Cured Epoxy Systems
Product Description
Circalok™ 6250 Hardener is an amber, low-viscosity liquid curing agent intended for use with compatible Circalok epoxy resins. It supports high-solids formulations used in adhesive, electrical encapsulation, and laminate applications. With a typical viscosity of 350 cP at 25 °C and a specific gravity of 0.94, the hardener is formulated to maintain low mixed-system viscosity for component encapsulation. Final mix ratios, application instructions, cure schedules, and cured properties depend on the selected Circalok epoxy resin and must be taken from that resin’s applicable technical data sheet.
Key features
- Low-viscosity curing agent: Provides a typical viscosity of 350 cP at 25 °C for use in compatible Circalok epoxy formulations.
- Encapsulation-oriented processing: Maintains low viscosity to support component encapsulation when combined with the applicable epoxy resin.
- Cured-system chemical resistance: Supports chemically resistant cured systems when used with a compatible Circalok epoxy resin and its specified processing conditions.
Applications / Suitable for
- Electrical encapsulation formulations
- Adhesive formulations using compatible Circalok epoxy resins
- Laminate formulations using compatible Circalok epoxy resins
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Additional Information
As-supplied / before-processing properties
Typical properties of Circalok 6250 Hardener before mixing with a compatible Circalok epoxy resin. These values are not intended for specification purposes.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Product type | Epoxy hardener | — | Curing agent for compatible Circalok epoxy resins |
| Appearance | Amber liquid | — | As supplied |
| Viscosity | 350 | cP | At 25 °C; test method not stated |
| Specific gravity | 0.94 | — | Typical value; test temperature and method not stated |
| Shelf life | 1 | year | From date of manufacture; stored at 25 °C in the original unopened container in a cool, dry environment |
